Brussels Port Authority

Flag of Brussels Port Authority - Image by Ivan Sache, 4 January 2007

Brussels is Belgium's second largest inland port;
transport on the river Zenne/Senne was first documented almost a thousand
years ago. Founded in 1993, the port authority is a public body dependent on the Region
of Brussels-Capital (its predecessor was founded in 1896). Quoting the Port Authority website:

Thanks to its exceptional accessibility, as an inland port, the Port of
Brussels has been given the status of a sea port. This means that it is
accessible round the clock, 365 days per year for both river and maritime
traffic up to 4,500 tons (convoys up to 9,000 tons after completion of
modernisation of the canal in Flanders); the new Wintam maritime lock links
the sea canal to the river Scheldt.

The flag of the Brussels Port Authority, as seen there on land and on one service boat, is white with the logotype spread out over the centre, taking up one third of flag height. This logotype consists of the
yellow iris of Brussels, fimbriated white, on a dark blue square accompanied to its right by words in dark blue Port de Bruxelles / Haven van Brussel,
separated by a light blue stripe which is straight, wavy, and straight
again.

Jan Mertens, 4 January 2007

Liège Port Authority

The Liège Port Authority (port autonome de Liège) was founded in 1937 and
is responsible for infrastructure, permits, equipment, and waterway traffic
control. Local authorities, in the first place the municipality of Liège, and the Walloon Region are represented on the governing council.
The port has all kinds of necessary equipment, docks,
warehouses, road and rail connections, yachting berths, etc. Liège, on the
river Meuse, is connected to Antwerp and the sea via the Albert Canal and to Rotterdam, and the sea, again via the Juliana Canal. Other canals,
mostly smaller ones, connect Liège with French waterways.
Liège is the third most important inland harbour in
Europe. The future beckons in the form of Liège TRIlogiPORT, an
intermodal logistics area under construction.

Photographies on the Brussels Port Authority website show the flag of the Liè Port Authority as a white flag with (probably) the port logotype and the name "port autonome de liège" in a special font, lower case, the word "autonome" in light blue whereas the other words and the
logotype are rendered in a darker blue. The logotype is made of an incomplete circle surrounding an upright figure symbolizing the famous Liège perron, the symbol of freedom, and three waves.